single 4 ohm subs / wiring help

[suleman36 10+ year member]

explain what ?

 

[n2audio 5,000+ posts]

BUT if you don't already have them exchanged yet, trust me and get the 8 ohm to run in parallel. It will give better results than the 2 ohm regardless of wiring because you know that the subs are getting the same signal because they are run on the same bridged channel and at the same time, you don't have the back EMF problem inherent with running 2 drivers in series.

2x2 ohm bridged in series or 2x8 ohm bridged in parallel -- I see no reason why there would be a difference. If the channels are bridged the subs are seeing identical signals. By my understanding back EMF is eliminated either way.

 

[suleman36 10+ year member]

Im probably going to keep the single 4 ohm versians that i will be recieving wednesday and just run them off my RF Power 1000 5 channel amp using the sub channel of 600 x 1 @ 2 ohm

The other option whould be to get the 8 ohm versian and wire it to 4 ohm mono

 

[helotaxi 5,000+ posts]

It is far less desirable to make subwoofer to subwoofer connections in series. Because of slight and unavoidable differences between speakers and because of the high likelihood of uneven loading between different speakers in a car, there will be slight differences in the mechanical behavior of the two speakers in series. These differences in movement result in induced voltage (called back EMF) being created by the speakers across the series connection. This effect causes a problem when two speakers which behave differently are connected in series because the speakers can modulate each other (cause each other to move), resulting in distortion. The problem becomes more serious as more speakers are connected in series.
A good experiment to show the effect of back EMF is the following: connect four speakers in series and short the positive and negative input leads of the series circuit. Push down on one cone with your hand; you will notice that the three other speakers will move in the opposite direction of the one you are pushing. Now, reconnect the speakers in parallel, short the inputs and push down on one cone. The speakers will not modulate each other because each one is shorted directly.

Questions?

Im probably going to keep the single 4 ohm versians that i will be recieving wednesday and just run them off my RF Power 1000 5 channel amp using the sub channel of 600 x 1 @ 2 ohm

Excellent option.